# Copyright 2022 Huawei Technologies Co., Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ============================================================================
"""Event Enum as type of event."""

from enum import Enum


class Event(Enum):
    """
    An enum represents different type of event.

    - TopologicalChangeEvent: an event represents topological relation changed in `SymbolTree`.
    - CodeChangeEvent: an event represents code been changed when building `SymbolTree`.
    """
    TopologicalChangeEvent = 0
    CodeChangeEvent = 1
